What's the consensus, I've got a clean 87` Zilla that was all original when I got it. I put a HPR pipe on it and sent jerry my motor, which is now making around 75hp. My question is, would it be better to preserve this bike in it's original condition other then the pipe and motor, or build a custom bike with updated suspension, breaks, powder coat, ect?

How original and clean? Post pics. I say if it has oem plastic don't race cut them the motor is now " jerry reliable" so the motor mods IMO are worth it. Put shocks on it save oem ones and put them back on when you sell it! 

Check out the gallery, most viewed section, third one in, phone won't let me post a pic.